Nanni T4.155 seriers, Workshop Manual

Page: 94 / 191

60300140 (
indice A
) 4 CYLINDERS WORKSHOP MANUAL 94/191
4. CHECK THE AXIAL CLEARANCE OF THE INJECTION PUMP
DRIVE GEAR
a. Temporarily remove the flange and the No.2 cam shaft timing
pulley with the four assembly bolts.
b. Move cam shaft No.2 timing pulley from the front to the back and
check the axial clearance of the injection pump pinion shaft.
Reference: 0.15 – 0.55 mm
If the axial clearance is insufficient, loosen the two attachment nuts
of the injection pump and the three spacer assembly bolts securing
the injection pump, and re-tighten them as necessary to obtain the
necessary clearance.
If the axial clearance is still insufficient, remove the timing casing
cover and reinstall it.
5. REINSTALL THE CRANKSHAFT PULLEY
a. Make the pulley assembly key coincide with the key groove in the
pulley.
b. Use the special maintenance tool SST and a hammer to fit the
pulley.
c. Use the special maintenance tool SST to reinstall and tighten the
pulley assembly bolt plate to the recommended tightening torque.
Recommended tightening torque:
363 N.m (3.700 kgf.cm)